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Effect of Crystallization Kinetics on Microstructure and Charge Transport of Polythiophenes
Author(s) -
Vakhshouri Kiarash,
Gomez Enrique D.
Publication year - 2012
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201200531
Subject(s) - crystallization , crystallinity , polythiophene , kinetics , materials science , microstructure , polymer chemistry , chemical engineering , crystallization of polymers , charge carrier , chemical physics , polymer , chemistry , conductive polymer , composite material , optoelectronics , physics , quantum mechanics , engineering
We have examined the effects of crystallization kinetics of poly(3‐hexylthiophene) and poly[2,5‐bis(3‐hexadecylthiophen‐2‐yl)thieno(3,2‐b)thiophene] on microstructure and charge transport. Rapid crystallization increases the density of tie molecules in polythiophenes. As a consequence, ordered regions are better connected resulting in higher charge carrier mobilities. Our results suggest that controlling the crystallization kinetics might be an important factor for maximizing the charge mobility in semicrystalline polythiophene thin films.